Search results for "Railway ballast"

showing 2 items of 2 documents

Novel performance-based technique for predicting maintenance strategy of bitumen stabilised ballast

2018

Abstract Despite being the most used worldwide, railway ballasted tracks presents high maintenance cost related to ballast settlement and particle degradation. With the aim of reducing life cycle costs, bitumen stabilised ballast (BSB) has been recently proposed as a relatively cheap alternative maintenance solution to be applied to existing tracks. This study aims at assessing the potential advantages of this technology, defining a novel maintenance strategy of traditional ballasted track-beds. A protocol for the application of the BSB technology and its associated maintenance strategy is defined. To estimate minor and major maintenance operations of BSB scenario in comparison to tradition…

BallastEngineeringMaintenance0211 other engineering and technologiesRailway ballastDegradation model020101 civil engineering02 engineering and technologyBitumen stabilisationTrack (rail transport)0201 civil engineeringTamping021105 building & constructionLife cycle costsSettore ICAR/04 - Strade Ferrovie Ed AeroportiGeneral Materials ScienceSensitivity (control systems)Civil and Structural EngineeringSettlementbusiness.industrySettlement (structural)Maintenance strategyBuilding and ConstructionReliability engineeringBitumen stabilisation; Degradation model; Life cycle approach; Maintenance; Railway ballast; Settlement; Tamping; Civil and Structural Engineering; Building and Construction; Materials Science (all)AsphaltMaterials Science (all)businessLife cycle approachMarine engineeringConstruction and Building Materials
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A New High-Efficiency Procedure for Aggregate Gradation Determination of the Railway Ballast by Means Image Recognition Method

2013

Abstract The mechanical characteristics of the railway superstructure are related to the properties of the ballast, and especially to the particle size distribution of its grains. Under the constant stress-strain of carriages, the ballast can deteriorate over time, and consequently it should properly be monitored for safety reasons. The equipment which currently monitors the railway superstructure (like the Italian diagnostic train Archimede) do not make any “quantitative” evaluation of the ballast. The aim of this paper is therefore to propose a new methodology for extracting railway ballast particle size distribution by means of the image processing technique. The procedure has been teste…

BallastRailway ballast Image analysis Segmentation techniques Aggregate gradation.EngineeringRailway lineAggregate (composite)business.industryAggregate gradationRailway ballastImage processingStructural engineeringAutomotive engineeringImage analysisSegmentation techniqueslcsh:TA1-2040Settore ICAR/04 - Strade Ferrovie Ed AeroportiGradationTrainbusinesslcsh:Engineering (General). Civil engineering (General)Civil and Structural EngineeringArchives of Civil Engineering
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